<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/index.css">
</head>

<body>
    <div class="main">
        <!-- 按钮切换区域 -->
        <div class="btn">
            <button class="active">初级</button>
            <button>中级</button>
            <button>高级</button>
            <button>重新开始</button>
        </div>

        <!-- 游戏区域 -->
        <div class="gameArea" id="gameArea"></div>

        <div class="mine-num">剩余雷的数量:<span id="surplus"></span></div>
    </div>
    <script src="js/index.min.js"></script>
</body>

</html>